The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 1997
Filed:
Sep. 26, 1995
Centre National de la Recherche Scientifique, Paris, FR;
Abstract
An element for thermally protecting a substrate is deposited on the substrate and comprises a quasicrystalline aluminium alloy having a thermal diffusivity lower than 2.5.times.10.sup.-6 m.sup.2 /s at room temperature and a thermal diffusivity, within the temperature range 650.degree.-750.degree. C., which does not exceed its thermal diffusivity at room temperature by a factor greater than 3. The element may be used to provide heat barriers or bonding layers for substrates. The heat protection element, used in the form of a heat barrier or in the form of a bond coat for heat barriers, exhibits good thermal insulation properties, good mechanical properties, a low specific mass, good resistance to corrosion, and great ease of processing. Further, the invention is useful in limiting heat transfer towards or from parts and components of fittings in many household and industrial devices, for example, heating or cooking devices, smoothing irons, automobile components, and in aeronautic components. The heat protection element deposited on the substrate consists essentially of a quasicrystalline aluminium alloy consisting essentially of one or a number of quasicrystalline phases which are either a quasicrystalline phase in the strict sense or approximating phases. Such quasicrystalline aluminum alloy has one of the following general compositions: Al.sub.a Cu.sub.b Fe.sub.c X.sub.d Y2.sub.e I.sub.g, Al.sub.a Pd.sub.b Mn.sub.c X.sub.d Y3.sub.e T.sub.f I.sub.g, Al.sub.a Cu.sub.b Co.sub.c X.sub.d Y4.sub.e T.sub.f I.sub.g, or Al.sub.a X.sub.d Y5.sub.e I.sub.g.